Spectral accuracy of multiwire proportional counter neutron detectors in time-of-flight regime

Abstract

An experiment is proposed to study the neutron detection depth profile—resulting from the cumulative effect of the gas absorption depth profile and signal detection efficiency—of position-sensitive multiwire proportional counter detectors. The effect of the drift voltage level on the detection efficiency is investigated and a method is proposed to adjust the drift voltage of new detectors to ensure appropriate spectral accuracy.

System for measurement of low yield neutron pulses from D–D fusion reactions based upon a3He proportional counter

“…In this way, the 3 He proportional tube is employed in a manner which we may call the 'charge integration mode' (CIM). In spite of the presence of any wall effect among others [8][9][10][11], it was experimentally verified that the time-integrated signal is still proportional to the neutron yield [19].…”

Simulation and minimization of nonlinear effects in backgammon-type multi-wire gas proportional counters

“…Since the invention of the multi-wire gas proportional counter (MWPC) by Charpak in 1968 [1], its use has been of fundamental importance not only to the field of nuclear physics, for which it was developed, but to many other areas such as x-ray spectroscopy, elementary particle physics, protein crystallography and medicine [2][3][4][5]. The ability of such devices to provide fundamental insight into so many fields of science, eventually led to the award of the 1992 Nobel Prize in physics to Charpak, 'for his invention and development of particle detectors, in particular the multiwire proportional chamber' 3 .…”